Accurascale pushed the boundaries of detail by making the body-side grilles from incredibly fine, scale-accurate etched metal, and the pantograph heads as a very lightweight push-fit/clip-on assembly. 

Because the locomotive is wrapped in a highly protective, tightly fitting factory foam packaging tray, the mechanical friction of pulling the heavy locomotive out of its slot naturally snags these tiny protrusions. The lateral force pops the friction-fitted pantograph heads off their pivots and cleanly un-seats the fine metal grilles from their shallow body recesses.